A mixture of equal amounts of two enantiomers <span>is called a racemic mixture.</span>
Circulatory system.....circulates blood (a vital delivery system of oxygen) throughout the whole body when tissues need it the most and with a constant supply.
Mutualism is a symbiotic relationship between organisms in which each species benefits and is unharmed.
An example would be flowers and bees. Flowers give bees pollen and nectar, and the bees help with the reproduction of flowers.
Answer:
first one i think it is all living things are made of cells
Explanation: